shadow.h revision 05b261ec 
1/*
2 *
3 * Copyright © 2000 Keith Packard
4 *
5 * Permission to use, copy, modify, distribute, and sell this software and its
6 * documentation for any purpose is hereby granted without fee, provided that
7 * the above copyright notice appear in all copies and that both that
8 * copyright notice and this permission notice appear in supporting
9 * documentation, and that the name of Keith Packard not be used in
10 * advertising or publicity pertaining to distribution of the software without
11 * specific, written prior permission.  Keith Packard makes no
12 * representations about the suitability of this software for any purpose.  It
13 * is provided "as is" without express or implied warranty.
14 *
15 * KEITH PACKARD DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
16 * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
17 * EVENT SHALL KEITH PACKARD BE LIABLE FOR ANY SPECIAL, INDIRECT OR
18 * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
19 * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
20 * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
21 * PERFORMANCE OF THIS SOFTWARE.
22 */
23
24#ifndef _SHADOW_H_
25#define _SHADOW_H_
26
27#include "scrnintstr.h"
28
29#ifdef RENDER
30#include "picturestr.h"
31#endif
32
33#include "damage.h"
34#include "damagestr.h"
35typedef struct _shadowBuf   *shadowBufPtr;
36
37typedef void (*ShadowUpdateProc) (ScreenPtr pScreen,
38				  shadowBufPtr pBuf);
39
40#define SHADOW_WINDOW_RELOCATE 1
41#define SHADOW_WINDOW_READ 2
42#define SHADOW_WINDOW_WRITE 4
43
44typedef void *(*ShadowWindowProc) (ScreenPtr	pScreen,
45				   CARD32	row,
46				   CARD32	offset,
47				   int		mode,
48				   CARD32	*size,
49				   void		*closure);
50
51/* BC hack: do not move the damage member.  see shadow.c for explanation. */
52typedef struct _shadowBuf {
53    DamagePtr           pDamage;
54    ShadowUpdateProc	update;
55    ShadowWindowProc	window;
56    RegionRec		damage;
57    PixmapPtr		pPixmap;
58    void		*closure;
59    int			randr;
60
61    /* screen wrappers */
62    GetImageProcPtr     GetImage;
63    CloseScreenProcPtr  CloseScreen;
64} shadowBufRec;
65
66/* Match defines from randr extension */
67#define SHADOW_ROTATE_0	    1
68#define SHADOW_ROTATE_90    2
69#define SHADOW_ROTATE_180   4
70#define SHADOW_ROTATE_270   8
71#define SHADOW_ROTATE_ALL   (SHADOW_ROTATE_0|SHADOW_ROTATE_90|\
72			     SHADOW_ROTATE_180|SHADOW_ROTATE_270)
73#define SHADOW_REFLECT_X    16
74#define SHADOW_REFLECT_Y    32
75#define SHADOW_REFLECT_ALL  (SHADOW_REFLECT_X|SHADOW_REFLECT_Y)
76
77extern int shadowScrPrivateIndex;
78
79#define shadowGetBuf(pScr)  ((shadowBufPtr) (pScr)->devPrivates[shadowScrPrivateIndex].ptr)
80#define shadowBuf(pScr)            shadowBufPtr pBuf = shadowGetBuf(pScr)
81#define shadowDamage(pBuf)  DamageRegion(pBuf->pDamage)
82
83Bool
84shadowSetup (ScreenPtr pScreen);
85
86Bool
87shadowAdd (ScreenPtr	    pScreen,
88	   PixmapPtr	    pPixmap,
89	   ShadowUpdateProc update,
90	   ShadowWindowProc window,
91	   int		    randr,
92	   void		    *closure);
93
94void
95shadowRemove (ScreenPtr pScreen, PixmapPtr pPixmap);
96
97shadowBufPtr
98shadowFindBuf (WindowPtr pWindow);
99
100Bool
101shadowInit (ScreenPtr pScreen, ShadowUpdateProc update, ShadowWindowProc window);
102
103void *
104shadowAlloc (int width, int height, int bpp);
105
106void
107shadowUpdatePacked (ScreenPtr	    pScreen,
108		    shadowBufPtr    pBuf);
109
110void
111shadowUpdatePlanar4 (ScreenPtr	    pScreen,
112		     shadowBufPtr   pBuf);
113
114void
115shadowUpdatePlanar4x8 (ScreenPtr    pScreen,
116		       shadowBufPtr pBuf);
117
118void
119shadowUpdateRotatePacked (ScreenPtr    pScreen,
120			  shadowBufPtr pBuf);
121
122void
123shadowUpdateRotate8_90 (ScreenPtr    pScreen,
124			shadowBufPtr pBuf);
125
126void
127shadowUpdateRotate16_90 (ScreenPtr    pScreen,
128			 shadowBufPtr pBuf);
129
130void
131shadowUpdateRotate16_90YX (ScreenPtr    pScreen,
132			   shadowBufPtr pBuf);
133
134void
135shadowUpdateRotate32_90 (ScreenPtr    pScreen,
136			 shadowBufPtr pBuf);
137
138void
139shadowUpdateRotate8_180 (ScreenPtr    pScreen,
140			 shadowBufPtr pBuf);
141
142void
143shadowUpdateRotate16_180 (ScreenPtr    pScreen,
144			  shadowBufPtr pBuf);
145
146void
147shadowUpdateRotate32_180 (ScreenPtr    pScreen,
148			  shadowBufPtr pBuf);
149
150void
151shadowUpdateRotate8_270 (ScreenPtr    pScreen,
152			 shadowBufPtr pBuf);
153
154void
155shadowUpdateRotate16_270 (ScreenPtr    pScreen,
156			  shadowBufPtr pBuf);
157
158void
159shadowUpdateRotate16_270YX (ScreenPtr    pScreen,
160			    shadowBufPtr pBuf);
161
162void
163shadowUpdateRotate32_270 (ScreenPtr    pScreen,
164			  shadowBufPtr pBuf);
165
166void
167shadowUpdateRotate8 (ScreenPtr    pScreen,
168		     shadowBufPtr pBuf);
169
170void
171shadowUpdateRotate16 (ScreenPtr    pScreen,
172		      shadowBufPtr pBuf);
173
174void
175shadowUpdateRotate32 (ScreenPtr    pScreen,
176		      shadowBufPtr pBuf);
177
178typedef void (* shadowUpdateProc)(ScreenPtr, shadowBufPtr);
179
180shadowUpdateProc shadowUpdatePackedWeak(void);
181shadowUpdateProc shadowUpdatePlanar4Weak(void);
182shadowUpdateProc shadowUpdatePlanar4x8Weak(void);
183shadowUpdateProc shadowUpdateRotatePackedWeak(void);
184
185#endif /* _SHADOW_H_ */
186